Developed an online stay rental application, StayBooking, using React and Spring Boot, supporting over 1,000 users in the first two months post-launch.Designed and implemented a single-page application using React, leveraging AntD components to enhance user interface and user experience.Implemented backend services using Spring Data JPA with Hibernate, ensuring secure data transactions and seamless interactions between the frontend and backend.Utilized PostgreSQL to manage and analyze over 50,000 records of user-generated data, including stay details and reservation history.Integrated Google Cloud Storage for storing and retrieving media files, reducing media load times by 40%Deployed backend services on Google Cloud Run, ensuring enhanced scalability and reliability.

Designed a Kotlin Spotify favorite app by fully leveraging Android Jetpack Library and Hilt Dependency InjectionImplemented navigation and application logic with Jetpack Navigation and managed RESTful services with Retrofit.Designed the UI with Jetpack Compose in MVVM architecture, enhancing app responsiveness and maintainability.Enhanced data persistence for user preferences with Room Database and managed global music playback with Google Exoplayer.

Constructed an interactive conversational UI using React and Ant Design for real-time PDF document interaction.Developed RESTful APIs with Express and Node.js, optimized for high-performance request handling.Employed an in-memory vector store to cache dynamically generated embeddings for rapid data retrieval.

Developed a full-stack application with Spring Boot, enabling users to discover Twitch content based on personalized recommendations.Enhanced user experiences using React and Ant Design for a responsive web interface.Managed data with MySQL on AWS RDS, implementing CRUD operations via Spring Data JDBC.Integrated real-time Twitch data retrieval using the Twitch API with OpenFeign HTTP client.Secured user authentication and session management with Spring Security.Implemented a content-based recommendation algorithm tailored to users' preferences.Optimized performance with Spring Boot's caching, using Caffeine, and included comprehensive unit tests.Deployed the containerized application on AWS App Runner for scalable, reliable access.